Dry ice passive cooling device

ABSTRACT

Disclosed embodiments provide a passive cooling solution that enables delivery of perishable consumables such as food, beverages and/or medicines. In embodiments, a container comprises a first compartment for items to be kept at a freezer temperature, a second compartment for items to be kept at a refrigerator temperature, and a third compartment for items to be kept at an unrefrigerated temperature. A dry ice compartment has a first side panel facing the first compartment, and a second side panel facing the second compartment. The first side panel and second side panel have differing amounts of surface area, creating an asymmetrical cooling profile that promotes freezer temperatures in the first compartment, and refrigerator temperatures in the second compartment. A divider separates the second compartment and the third compartment to promote unrefrigerated temperatures in the third compartment.

FIELD

This disclosure relates generally to passive cooling devices, and more particularly, to a dry ice passive cooling device.

BACKGROUND

Increasing numbers of services now deliver foods, beverages, medicines, and other consumables to consumer's homes and businesses. These services provide new levels of convenience for many people. Certain consumable items need to be kept refrigerated or frozen to maximize shelf life. Refrigeration slows bacterial growth. Bacteria are prevalent everywhere in nature. When bacteria have ample nutrients (food), moisture, and favorable temperatures, they can grow rapidly, increasing in numbers to the point where some types of bacteria can cause illness. Bacteria grow most rapidly in the range of temperatures between 40 and 140° F. It is therefore desirable to maintain a proper temperature range for these items while in storage.

SUMMARY

In one embodiment, there is provided a storage container comprising: a bin; a bin lid, the bin lid rotatably affixed to the bin; a first partition, wherein the first partition extends from a front inner surface to a rear inner surface; wherein the first partition includes a lower portion comprising a freezer compartment divider and an upper portion comprising a dry ice compartment; and a second partition, wherein the second partition extends from a front inner surface to a rear inner surface.

In another embodiment, there is provided a storage container comprising: a bin; a bin lid, the bin lid rotatably affixed to the bin; wherein the bin comprises a floor; a plurality of ridges disposed on the floor, wherein each ridge of the plurality of ridges has a height ranging from ten millimeters to 50 millimeters; a dry ice sleeve disposed on a lateral interior freezer surface of the bin; a first partition, wherein the first partition extends from a front inner surface to a rear inner surface; wherein the first partition includes a lower portion comprising a freezer compartment divider and an upper portion comprising a dry ice compartment; a second partition, wherein the second partition extends from a front inner surface to a rear inner surface; wherein the dry ice compartment comprises a base panel, a refrigerated side panel, a freezer side panel, and, a dry ice compartment lid; wherein the freezer side panel and the refrigerated side panel have unequal ventages; wherein the refrigerated side panel comprises: a plurality of indentations formed therein; and a plurality of small openings formed therein, and wherein each small opening of the plurality of small openings includes a first portion within an indentation from the plurality of indentations, and a second portion outside of the indentation; wherein the freezer side panel comprises: a plurality of indentations formed therein; a plurality of small openings formed therein; and a plurality of large openings formed therein; wherein a first subset of the small openings are partial indented section small openings; and wherein a second subset of the small openings are non-indented section small openings.

BRIEF DESCRIPTION OF THE DRAWINGS

The structure, operation, and advantages of the present invention will become further apparent upon consideration of the following description taken in conjunction with the accompanying figures (FIGS.). The figures are intended to be illustrative, not limiting

FIG. 1 is a perspective view of a storage container in accordance with disclosed embodiments.

FIG. 2 is a perspective view of a storage container showing internal components in accordance with disclosed embodiments.

FIG. 3 is a perspective view of a storage container in accordance with disclosed embodiments showing an open lid.

FIG. 4A is a front view of a storage container in accordance with disclosed embodiments.

FIG. 4B is a side view of a storage container in accordance with disclosed embodiments.

FIG. 4C is a bottom-up view of a storage container in accordance with disclosed embodiments.

FIG. 4D is a back view of a storage container in accordance with disclosed embodiments.

FIG. 4E is a top-down view of a storage container in accordance with disclosed embodiments.

FIG. 5A is a perspective view showing the floor surface of a storage container in accordance with disclosed embodiments.

FIG. 5B is a top-down view showing the floor surface of a storage container in accordance with disclosed embodiments.

FIG. 5C shows additional detail of the floor surface.

FIG. 5D is a top-down view showing the storage container in a cold climate configuration in accordance with disclosed embodiments.

FIG. 6A is a side view of an ambient compartment divider in accordance with disclosed embodiments.

FIG. 6B is a front view of an ambient compartment divider in accordance with disclosed embodiments.

FIG. 6C is a top-down view of an ambient compartment divider in accordance with disclosed embodiments.

FIG. 6D is a perspective view of an ambient compartment divider in accordance with disclosed embodiments.

FIG. 7A is a side view of a freezer compartment divider in accordance with disclosed embodiments.

FIG. 7B is a front view of a freezer compartment divider in accordance with disclosed embodiments.

FIG. 7C is a top-down view of a freezer compartment divider in accordance with disclosed embodiments.

FIG. 7D is a perspective view of a freezer compartment divider in accordance with disclosed embodiments.

FIG. 8A is a side view of a dry ice compartment refrigerated side panel in accordance with disclosed embodiments.

FIG. 8B is a front view of a dry ice compartment refrigerated side panel in accordance with disclosed embodiments.

FIG. 8C is a top-down view of a dry ice compartment refrigerated side panel in accordance with disclosed embodiments.

FIG. 8D is a perspective view of a dry ice compartment refrigerated side panel in accordance with disclosed embodiments.

FIG. 8E shows additional details of a dry ice compartment refrigerated side panel in accordance with disclosed embodiments.

FIG. 9A is a side view of a dry ice compartment freezer side panel in accordance with disclosed embodiments.

FIG. 9B is a front view of a dry ice compartment freezer side panel in accordance with disclosed embodiments.

FIG. 9C is a top-down view of a dry ice compartment freezer side panel in accordance with disclosed embodiments.

FIG. 9D is a perspective view of a dry ice compartment freezer side panel in accordance with disclosed embodiments.

FIG. 9E shows additional details of a dry ice compartment freezer side panel in accordance with disclosed embodiments.

FIG. 10A is a top-down view of a dry ice compartment lid in accordance with disclosed embodiments.

FIG. 10B is a front view of a dry ice compartment lid in accordance with disclosed embodiments.

FIG. 10C is a side view of a dry ice compartment lid in accordance with disclosed embodiments.

FIG. 10D is a perspective view of a dry ice compartment lid in accordance with disclosed embodiments.

FIG. 11 shows additional details of a dry ice compartment in accordance with disclosed embodiments.

FIG. 12 shows details of a dry ice compartment showing placement of a block of dry ice in accordance with disclosed embodiments.

DETAILED DESCRIPTION

Disclosed embodiments provide a passive cooling solution that enables delivery of perishable consumables such as food, beverages and/or medicines. In embodiments, a container comprises a first compartment for items to be kept at a freezer temperature, a second compartment for items to be kept at a refrigerator temperature, and a third compartment for items to be kept at an unrefrigerated temperature. A dry ice compartment has a first side panel facing the first compartment, and a second side panel facing the second compartment. The first side panel and second side panel have differing amounts of surface area, creating an asymmetrical cooling profile that promotes freezer temperatures in the first compartment, and refrigerator temperatures in the second compartment. A divider separates the second compartment and the third compartment to promote unrefrigerated temperatures in the third compartment. In this way, items can be kept within a proper temperature range for an extended period of time. This enables delivery services to provide containers to unattended areas such as a front or back porch. The items can remain safely stored for several hours. Embodiments may further include mechanical or electronic locks to provide further security.

In disclosed embodiments, a refrigerator temperature is a temperature ranging from 33 degrees Fahrenheit to 41 degrees Fahrenheit, a freezer temperature is a temperature ranging from minus 20 degrees Fahrenheit to 5 degrees Fahrenheit, and an unrefrigerated temperature may be an ambient temperature of outdoor air. In some embodiments, an unrefrigerated temperature may range from 42 degrees Fahrenheit to 89 degrees Fahrenheit. The ranges stated are exemplary, and in embodiments, the refrigerated and freezer temperature ranges may vary from those stated above.

FIG. 1 is a perspective view of a storage container 100 in accordance with disclosed embodiments. In FIG. 1, and some additional drawings, an axis indicator L may be shown to provide information regarding orientation of a view of the container 100. Container 100 includes a bin 102, with a hinged bin lid 104 affixed to the bin 102. In embodiments, the bin 102 is rectangular. Container 100 further includes lock 106. In embodiments, the lock 106 may be mechanical or electronic. The mechanical lock may include a key lock or a combination lock. In embodiments, the combination lock may be user-configurable, allowing a combination to be set and/or changed.

FIG. 2 is a perspective view of storage container 100 showing internal components in accordance with disclosed embodiments. In this view, the bin 102 is rendered as transparent to reveal internal components and features. Bin 102 includes floor 130. Disposed on floor 130 are a plurality of ridges, indicated generally as 132. The ridges 132 serve to promote air circulation beneath stored items. As can be seen in this view, bin 102 includes a first compartment 116 for frozen items. Examples of such frozen items can include ice cream and frozen food products. Bin 102 includes a second compartment 114 for refrigerated items. Examples of such refrigerator items can include fresh milk, eggs, and meats. Bin 102 includes a third compartment 112 for unrefrigerated items. Examples of such unrefrigerated items can include dry cereals, dried pasta products, and breads.

An ambient compartment divider 122 separates the second compartment 114 from the third compartment 112. Further details of the ambient compartment divider 124 are shown in FIGS. 6A-6D. The ambient compartment divider 122 is approximately the same height as the height of the bin 102.

A freezer compartment divider 124 separates the second compartment 114 from the first compartment 116. Further details of the freezer compartment divider 122 are shown in FIGS. 7A-7D. The freezer compartment divider 124 has a height that is less than the height of the bin 102, in order to accommodate dry ice compartment 220 that sits on top of the freezer compartment divider 124. The dry ice compartment 220 is described in further detail in FIGS. 8-10. Dry ice compartment 220 and freezer compartment divider 124 combine to form a partition 221.

The dry ice compartment 220 is configured and disposed to contain a block of dry ice. In embodiments, the dry ice compartment 220 is configured and disposed to contain a five-pound block of dry ice. The asymmetrical design of the dry ice compartment creates different temperature ranges in the third compartment 116 and the second compartment 114. The third compartment 116 is maintained at a freezer temperature, while the second compartment 114 is maintained at the refrigerator temperature.

Some embodiments may further include a dry ice sleeve 118. In embodiments, the dry ice sleeve may be used to store the dry ice instead of the dry ice compartment 220. In embodiments, the dry ice sleeve is comprised of a stretchable plastic material. The dry ice sleeve 118 is affixed to the lateral interior freezer surface 157, which is the interior surface that is farthest from the third compartment 112 that is used for storing “ambient” (non-refrigerated) items such as dried pasta, canned food, and the like. This may be used in colder environments. During winter in colder climates, by placing the dry ice within the dry ice sleeve 118, it provides less cooling to the second compartment 114, preventing the second compartment 114 from freezing. This is important because certain items such as vegetables can become damaged if frozen. Furthermore, liquid containers can potentially rupture if the contents freeze. Therefore, the dry ice sleeve is an important feature for enabling successful operation of the passive cooling device in colder environments.

FIG. 3 is a perspective view of storage container 100 in accordance with disclosed embodiments showing an open lid 104. In this view, the bin 102 is rendered as transparent to reveal internal components and features. As can be seen in this view the lid 104 is rotatably affixed to the bin 102 by hinges, indicated generally as 115. While three hinges are shown in FIG. 3, embodiments may have more or fewer hinges than depicted in FIG. 3. The ambient compartment divider 122 separates the second compartment 114 from the third compartment 112. The ambient compartment divider 122 is approximately the same height as the height of the bin 102. The freezer compartment divider 124 separates the second compartment 114 from the first compartment 116. The freezer compartment divider 124 has a height that is less than the height of the bin 102, in order to accommodate dry ice compartment 220.

The dry ice compartment 220 comprises a refrigerated side panel 232, a freezer side panel 234, and a dry ice compartment lid 236, which is affixed to side panels 232 and 234 via hinge 233, and is shown in an open configuration, revealing dry ice slot 238. During use, a piece of dry ice is placed within slot 238, and the lid 236 is then closed to secure the dry ice. The contents (food items) within the compartments 116, 114, and 112 may be preserved for several hours.

As can be seen in FIG. 3, the bin 102 has a front inner surface 151, and a rear inner surface 153, and the ambient compartment divider 122 and dry ice compartment 220 and freezer compartment divider 124 extend from the front inner surface 151 to the rear inner surface 153. Thus, dry ice compartment 220 and freezer compartment divider 124 combine to form a partition 221 (FIG. 2), where the dry ice compartment 220 serves as the upper portion of the partition 221, and the freezer compartment divider 124 serves as the lower portion of the partition. Ambient compartment divider 122 also serves as a second partition. In embodiments, the partitions extend from a front inner surface 151 to a rear inner surface 153.

FIG. 4A is a front view of a storage container 100 in accordance with disclosed embodiments. Container 100 comprises bin 102 and lid 104. In this view, front surface 108 of bin 102 is visible. Bin 102 has a height 107. In embodiments, the height 107 ranges from 48 centimeters to 58 centimeters. Other height ranges are possible within disclosed embodiments. Bin 102 further includes exterior bottom surface 103. In some embodiments, feet, casters, and/or other features may be disposed underneath the exterior bottom surface 103 to elevate the exterior bottom surface 103 off the ground/floor where the container 100 is placed.

FIG. 4B is a side view of a storage container 100 in accordance with disclosed embodiments. As can be seen in this view the lid 104 is rotatably affixed to the bin 102 by hinges, indicated generally as 115. In embodiments, one or more handles 179 may be affixed to the sides of the bin 102 for convenient carrying. FIG. 4C is a bottom-up view of a storage container in accordance with disclosed embodiments. In this view, front surface 108 and back surface 109 of bin 102 are shown, as well as exterior bottom surface 103. Exterior bottom surface 103 may be generally flat (planar). Bin 102 has depth 111. In embodiments, the depth 111 ranges from 45 centimeters to 55 centimeters. FIG. 4D is a back view of storage container 100 in accordance with disclosed embodiments. In this view, back surface 109 of bin 102 is shown. As can be seen in this view, the lid 104 is rotatably affixed to the bin 102 by hinges, indicated generally as 115. While three hinges are shown in FIG. 4D, embodiments may have more or fewer hinges than depicted in FIG. 4D. FIG. 4E is a top-down view of storage container 100 in accordance with disclosed embodiments. As can be seen in this view, the lid 104 is rotatably affixed to the bin 102 by hinges, indicated generally as 115. While three hinges are shown in FIG. 4E, embodiments may have more or fewer hinges than depicted in FIG. 4E.

FIG. 5A is a perspective view of container 100 showing the floor 130 of a storage container in accordance with disclosed embodiments. The floor 130 has a plurality of ridges 132 on the floor 130, which serve to improve air circulation. FIG. 5B is a top-down view showing the floor surface of storage container 100 in accordance with disclosed embodiments. The lid is not shown in FIG. 5A and FIG. 5B to reveal internal components. As can be seen in the view of FIG. 5B, the container 100 includes first compartment 116 for frozen items, second compartment 114 for refrigerated items, and third compartment 112 for unrefrigerated items. The ambient compartment divider 122 separates the second compartment 114 from the third compartment 112. The dry ice compartment 220, along with freezer compartment divider 124 (FIG. 5A) separates the second compartment 114 from the first compartment 116. The dry ice compartment 220 is configured with asymmetrical side panels, providing a greater amount of cooling to compartment 116 than compartment 114.

Some embodiments may further include a dry ice sleeve 118. In embodiments, the dry ice sleeve may be used to store the dry ice instead of the dry ice compartment 220. This may be used in colder environments. During winter in colder climates, by placing the dry ice within the dry ice sleeve 118, it provides less cooling to the second compartment 114, preventing the second compartment 114 from freezing.

Lock 106 is used to secure the container, by keeping the lid 104 closed. The lock may be a mechanical lock or an electronic lock, depending on customer needs and/or security requirements.

FIG. 5C shows additional detail of the surface of floor 130. As can be seen in FIG. 5C, a plurality of ridges, shown generally as 132, extend upward from floor 130. The ridges 132 have a height 135. In embodiments, the height 135 ranges from 10 millimeters to 50 millimeters.

FIG. 5D is a top-down view showing the storage container 100 in a cold climate configuration in accordance with disclosed embodiments. In this configuration, dry ice block 183 is placed within sleeve 118. The dry ice compartment 220 may be left empty. In this configuration, there is a first compartment 116 for frozen items, and a second compartment 117 for both refrigerated and/or unrefrigerated items. In this configuration, the ambient compartment divider 122 is placed adjacent to the dry ice compartment 220. This configuration may be used when the outside air is below a predetermined temperature, or is expected to fall below a predetermined temperature during the duration for which the container is expected to be storing items. In embodiments, the predetermined temperature is 35 degrees Fahrenheit.

FIG. 6A is a side view of an ambient compartment divider 122 in accordance with disclosed embodiments. Ambient compartment divider 122 has a length 144. In embodiments, the length 144 is slightly less than the depth 111, such that the ambient compartment divider 122 can snuggly fit to create a partition within the container 100.

FIG. 6B is a front view of ambient compartment divider 122. Ambient compartment divider 122 has a height 123. In embodiments, the height 123 is approximately the same height as height 107 shown in FIG. 4B. FIG. 6C is a top-down view of ambient compartment divider 122 in accordance with disclosed embodiments. Ambient compartment divider 122 has a thickness 143. In embodiments, the thickness 143 ranges from 35 millimeters to 45 millimeters. FIG. 6D is a perspective view of ambient compartment divider 122 in accordance with disclosed embodiments.

FIG. 7A is a side view of a freezer compartment divider 124 in accordance with disclosed embodiments. Freezer compartment divider 124 has a length 146. In embodiments, the length 146 is slightly less than the depth 111, such that the freezer compartment divider 124 can snuggly fit to create a partition within the container 100. FIG. 7B is a front view of freezer compartment divider 124 in accordance with disclosed embodiments. Freezer compartment divider 124 has height 125. In embodiments, height 125 ranges from 20 centimeters to 25 centimeters. This provides room for the dry ice compartment 220 which is positioned above the freezer compartment divider 124 to serve as partition 221 (FIG. 2). FIG. 7C is a top-down view of freezer compartment divider 124 in accordance with disclosed embodiments. Freezer compartment divider 124 has thickness 145. In embodiments, the thickness 145 ranges from 20 millimeters to 40 millimeters. FIG. 7D is a perspective view of a freezer compartment divider in accordance with disclosed embodiments.

FIG. 8A is a side view of a dry ice compartment refrigerated side panel 232 in accordance with disclosed embodiments. Panel 232 has a length 811. In embodiments, the length 811 is slightly less than the depth 111, such that the side panel 232 can fit within the container 100 to create partitions. Panel 232 comprises a plurality of small openings, indicated generally as 802. In embodiments, the openings 802 are circular. Other shapes are possible for the openings 802. In embodiments, each small opening 802 has a diameter 805. A radius R of each opening 802 is half the diameter 805. The area of each opening A is defined as:

A=πR²

The total ventage V₁ of the refrigerated side panel 232 is defined as:

H×A

Where H is the number of small openings, and A is the area of each small opening.

In embodiments, H ranges from 14 to 18. In embodiments, the diameter 805 ranges from 3 centimeters to 4 centimeters. FIG. 8B is a front view of dry ice compartment refrigerated side panel 232 in accordance with disclosed embodiments. Side panel 232 has a height 807. In embodiments, the height 807 ranges from 20 centimeters to 25 centimeters. The height 807 combined with the height 125 (FIG. 7B) is selected such that the combined height is less than the height 107, enabling the lid 104 to close. FIG. 8C is a top-down view of dry ice compartment refrigerated side panel 232 in accordance with disclosed embodiments. Panel 232 has thickness 809. In embodiments, thickness 809 ranges from one centimeter to two centimeters. FIG. 8D is a perspective view of dry ice compartment refrigerated side panel 232 in accordance with disclosed embodiments.

FIG. 8E shows additional details of dry ice compartment refrigerated side panel 232 in accordance with disclosed embodiments. As can be seen in FIG. 8E, a plurality of indentations 804 are formed in the panel 232. The indentations have a depth 812. In embodiments, the depth 812 ranges from 5 millimeters to 10 millimeters. A plurality of small openings 802 are formed within the side panel 232. A portion of at least some openings is formed within the indentation, and another portion of those openings is formed outside the indentation area. Region 816 includes an area of an opening formed within an indentation. Region 814 includes an area of that same opening formed outside of the indentation. The indentations serve to increase exposed surface area of a dry ice block inserted in slot 238 (FIG. 12). The openings serve to allow cooled air to pass into the second compartment 114 (FIG. 5B), enabling contents within the second compartment 114 to remain at a refrigerated temperature for an extended period (several hours).

FIG. 9A is a side view of a dry ice compartment freezer side panel 234 in accordance with disclosed embodiments. Panel 234 has a length 911. In embodiments, the length 911 is equivalent to length 811 of FIG. 8A, and is slightly less than the depth 111, such that the side panel 234 can fit within the container 100 to create partitions. Panel 234 comprises a plurality of small openings, indicated generally as 902. In embodiments, the small openings 902 are circular. Other shapes are possible for the openings 902. In embodiments, each small opening 902 has a diameter 905. In some embodiments, diameter 905 ranges from 2 centimeters to 4 centimeters. In some embodiments, diameter 905 ranges from 2 centimeters to 3 centimeters. In some embodiments, diameter 905 ranges from 3 centimeters to 4 centimeters. A radius R_(S) of each opening 902 is half the diameter 905. The area of each small opening A_(S) is defined as:

A _(S)=π(R _(S))²

Panel 234 comprises a plurality of large openings, indicated generally as 906. In embodiments, the large openings 906 are circular. Other shapes are possible for the openings 906. In embodiments, each large opening 906 has a diameter 919. A radius R_(L) of each opening 906 is half the diameter 919.

The area of each large opening A_(L) is defined as:

A _(L)=π(R _(L))²

The total ventage V₂ of the side panel 234 is defined as:

H _(S) ×A _(S) +H _(L) ×A _(L)

Where H_(S) is the number of small openings, and A_(S) is the area of each small opening, and H_(L) is the number of large openings, and A_(L) is the area of each small opening

In embodiments, H_(L) ranges from 10 to 12. In embodiments, the diameter 919 ranges from 5 centimeters to 7 centimeters. In embodiments, H_(S) ranges from 8 to 10. In embodiments, the diameter 905 ranges from 2 centimeters to 3 centimeters. Thus, in embodiments, the total ventage V₂ of side panel 234 is greater than the total ventage V₁ of the side panel 232, thereby providing a dry ice compartment 220 with an asymmetric ventage to promote cooling, where the first compartment 116 is maintained at a freezer temperature and where the second compartment 114 is maintained at a refrigerator temperature. Thus, in embodiments, side panel 232 and side panel 234 have unequal ventages. Thus, in embodiments, V₂>V₁.

A portion of each large opening 906 is formed within the indentation, and another portion of those openings is formed outside the indentation area. Region 916 includes an area of a large opening formed within an indentation. Region 914 includes an area of that same large opening formed outside of the indentation. The indentations serve to increase exposed surface area of a dry ice block inserted in slot 238 (FIG. 12). A subset of the small openings 902 are partial indented section small openings, similar to as shown in FIG. 8E, an example of which is indicated in FIG. 9A as 902A. Another subset of the small openings 902 are non-indented section openings, an example of which is indicated in FIG. 9A as 902B.

FIG. 9B is a front view of dry ice compartment freezer side panel 234 in accordance with disclosed embodiments. Side panel 234 has a height 907. In embodiments, the height 907 is similar to height 807 of FIG. 8B and ranges from 20 centimeters to 25 centimeters. The height 907 combined with the height 125 (FIG. 7B) is selected such that the combined height is less than the height 107, enabling the lid 104 to close. FIG. 9C is a top-down view of dry ice compartment freezer side panel 234 in accordance with disclosed embodiments. Panel 234 has thickness 909. In embodiments, thickness 909 ranges from one centimeter to two centimeters. FIG. 9D is a perspective view of dry ice compartment freezer side panel 232 in accordance with disclosed embodiments.

Referring again to FIG. 9A and FIG. 9D, two specific small openings are referenced as 902A and 902B. Opening 902A is a partial indented section small opening, as it is formed partially within an indented area and a non-indented area, similar to as shown in FIG. 8E with regions 814 and 816. Opening 902B is formed completely within a non-indented section. Thus, in embodiments, the side panel 234 includes a first set of small openings formed completely within a non-indented section and a second set of small openings formed partially within an indented area. Embodiments further include a plurality of large openings formed within the side panel 234. This arrangement provides additional cooling to compartment 116 to enable air within that compartment to remain at a freezer temperature.

FIG. 9E shows additional details of dry ice compartment freezer side panel 234 in accordance with disclosed embodiments. As can be seen in FIG. 9E, a plurality of indentations 904 are formed in the panel 234. The indentations have a depth 912. In embodiments, the depth 912 ranges from 5 millimeters to 10 millimeters. A plurality of small openings 902 are formed within the side panel 234. A portion of at least some of the small openings is formed within the indentation, such as opening 902A, and another portion of those openings is formed outside the indentation area, such as opening 902B. Large openings, indicated generally as 906 are also formed within the side panel 234. The indentations serve to increase exposed surface area of a dry ice block inserted in slot 238 (FIG. 3). The openings serve to allow cooled air to pass into the first compartment 116 (FIG. 5B), enabling contents within the first compartment 116 to remain at a frozen temperature for an extended period (several hours).

FIG. 10A is a top-down view of a dry ice compartment lid 236 in accordance with disclosed embodiments. Lid 236 has a length 942. In embodiments, length 942 ranges from 44 centimeters to 48 centimeters. Lid 236 may further comprise opening 932, allowing the dry ice to be viewed without needing to open the lid 236, in order to assess the amount of dry ice remaining. Lid 236 may further include a warning text label 934. In the example of FIG. 10A, the warning text label 934 states “Caution Dry Ice.” The lid 236 may further include a warning symbol 936, such as to convey that caution is warranted when handling dry ice. FIG. 10B is a front view of dry ice compartment lid 236 in accordance with disclosed embodiments. Dry ice compartment lid 236 has width 944. In embodiments, width 944 ranges from 8 centimeters to 12 centimeters. FIG. 10C is a side view of dry ice compartment lid 236 in accordance with disclosed embodiments. Dry ice compartment lid 236 has thickness 946. In embodiments, thickness 946 ranges from 8 millimeters to 12 millimeters. FIG. 10D is a perspective view of dry ice compartment lid 236 in accordance with disclosed embodiments.

FIG. 11 shows additional details of dry ice compartment 220. As can be seen in FIG. 11, a base panel 956 is disposed over the freezer compartment divider 124. The dry ice compartment freezer side panel 234 and the dry ice compartment refrigerated side panel 232 are in contact with the base panel 956, and the lid is rotatably affixed to the dry ice compartment freezer side panel 234 and dry ice compartment refrigerated side panel 232, forming slot 238 to secure dry ice during use.

FIG. 12 shows details of a dry ice compartment 220 showing placement of a block of dry ice 183. As can be seen in FIG. 12, the dry ice compartment lid 236 is affixed to the dry ice compartment 220 by hinge 233. When the lid 236 is opened, it reveals slot 238, allowing block 183 to be inserted therein. The lid 236 is then closed (such as shown in FIG. 3), securing the block of dry ice in the compartment. In embodiments, the lid 236 may have a securing mechanism such as a latch to secure it in a closed position. Since dry ice evaporates directly, bypassing the liquid phase, there is no messy liquid to clean or dispose of, as is the case with melting water-based ice.

In embodiments, various components, such as the bin, dividers, and dry ice compartment are comprised of expanded polypropylene (EPP). Expanded Polypropylene (EPP) is a highly versatile closed-cell bead foam that provides a unique range of properties, including outstanding energy absorption, multiple impact resistance, thermal insulation, buoyancy, water and chemical resistance, an exceptionally high strength to weight ratio and recyclability.

As can now be appreciated, disclosed embodiments enable safe and secure delivery of perishable items such as food, beverages, and medicines. This can power a new industry of business that deliver such goods to consumers at their homes, ushering in a new level of convenience and safety. Disclosed embodiments can utilize three compartments, with one compartment for frozen goods, one for refrigerated goods, and one for unrefrigerated goods. Disclosed embodiments can be utilized in colder climates by reconfiguring the dividers and positioning the dry ice in the sleeve on the side instead of in the dry ice container. In this way, disclosed embodiments can serve people in a variety of climates, enabling more efficient distribution of food, beverage, and medicine items.

While some disclosed embodiments were shown with three compartments, other embodiments can have more or fewer compartments to accommodate a wide range of products to be stored. As an example, some embodiments may include four compartments, which include a freezer compartment, a cold refrigerated storage compartment (e.g., for dairy and/or medications), a cool storage compartment (e.g., for produce), and/or an ambient compartment for non-refrigerated goods (e.g., dry pasta). Embodiments can be made in a variety of sizes to accommodate various amounts of food storage and expected preservation duration.

Although the invention has been shown and described with respect to a certain preferred embodiment or embodiments, certain equivalent alterations and modifications will occur to others skilled in the art upon the reading and understanding of this specification and the annexed drawings. In particular regard to the various functions performed by the above described components (assemblies, devices, circuits, etc.) the terms (including a reference to a “means”) used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the specified function of the described component (i.e., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary embodiments of the invention. In addition, while a particular feature of the invention may have been disclosed with respect to only one of several embodiments, such feature may be combined with one or more features of the other embodiments as may be desired and advantageous for any given or particular application. 

What is claimed is:
 1. A storage container comprising: a bin; a bin lid, the bin lid rotatably affixed to the bin; a first partition, wherein the first partition extends from a front inner surface to a rear inner surface; wherein the first partition includes a lower portion comprising a freezer compartment divider and an upper portion comprising a dry ice compartment; and a second partition, wherein the second partition extends from a front inner of the bin surface to a rear inner surface of the bin.
 2. The container of claim 1, wherein the dry ice compartment comprises a base panel, a refrigerated side panel, a freezer side panel, and, a dry ice compartment lid.
 3. The container of claim 2, wherein the dry ice compartment lid is affixed to the refrigerated side panel and freezer side panel via a hinge.
 4. The container of claim 2, wherein the freezer side panel and the refrigerated side panel have unequal ventages.
 5. The container of claim 2, wherein the refrigerated side panel comprises: a plurality of indentations formed therein; and a plurality of openings formed therein.
 6. The container of claim 5, wherein each opening of the plurality of openings includes a first portion within an indentation from the plurality of indentations, and a second portion outside of the indentation.
 7. The container of claim 5, wherein each indentation from the plurality of indentations has a depth ranging from 5 millimeters to 10 millimeters.
 8. The container of claim 5, wherein each opening from the plurality of openings is circular.
 9. The container of claim 8, wherein each opening has a diameter ranging from three centimeters to four centimeters.
 10. The container of claim 2, wherein the freezer side panel comprises a plurality of indentations formed therein, a plurality of small openings formed therein, and a plurality of large openings formed therein.
 11. The container of claim 10, wherein each large opening of the plurality of large openings includes a first portion within an indentation from the plurality of indentations, and a second portion outside of the indentation.
 12. The container of claim 11, wherein a first subset of the small openings are partial indented section small openings, and wherein a second subset of the small openings are non-indented section openings.
 13. The container of claim 10, wherein each small opening from the plurality of small openings is circular.
 14. The container of claim 13, wherein each small opening has a diameter ranging from three centimeters to four centimeters.
 15. The container of claim 14, wherein each large opening from the plurality of large openings is circular.
 16. The container of claim 15, wherein each large opening has a diameter ranging from five centimeters to seven centimeters.
 17. The container of claim 1, wherein the bin is comprised of expanded polypropylene (EPP).
 18. The container of claim 1, wherein the bin comprises a floor, and a plurality of ridges disposed on the floor.
 19. The container of claim 1, further comprising a dry ice sleeve disposed on a lateral interior freezer surface of the bin.
 20. A storage container comprising: a bin; a bin lid, the bin lid rotatably affixed to the bin; wherein the bin comprises a floor; a plurality of ridges disposed on the floor, wherein each ridge of the plurality of ridges has a height ranging from ten millimeters to 50 millimeters; a dry ice sleeve disposed on a lateral interior freezer surface of the bin; a first partition, wherein the first partition extends from a front inner surface of the bin to a rear inner surface of the bin; wherein the first partition includes a lower portion comprising a freezer compartment divider and an upper portion comprising a dry ice compartment; a second partition, wherein the second partition extends from a front inner surface to a rear inner surface; wherein the dry ice compartment comprises a base panel, a refrigerated side panel, a freezer side panel, and, a dry ice compartment lid; wherein the freezer side panel and the refrigerated side panel have unequal ventages; wherein the refrigerated side panel comprises: a plurality of indentations formed therein; and a plurality of small openings formed therein, and wherein each small opening of the plurality of small openings includes a first portion within an indentation from the plurality of indentations, and a second portion outside of the indentation; wherein the freezer side panel comprises: a plurality of indentations formed therein; a plurality of small openings formed therein; and a plurality of large openings formed therein; wherein a first subset of the small openings are partial indented section small openings; and wherein a second subset of the small openings are non-indented section small openings. 